LU-5896 wirecheck: add swap layout structs to wirecheck

LU-5896 wirecheck: add swap layout structs to wirecheck

For the support of blocking migrations, the MDS_SWAP_LAYOUTS RPC needs
to be updated. Wire checks were missing for some structs related to this
RPC. This patch introduces those checks to make sure that the new RPC
layout will not introduce layout changes in the structures.

Signed-off-by: Courrier Guillaume <guillaume.courrier@cea.fr>
Change-Id: I77b19bf6a4cf03bdcb4995bd83cb00ab52195cfe
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54473
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Etienne AUJAMES <eaujames@ddn.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>